參數(shù)資料
型號: MCT7808CT
廠商: MOTOROLA INC
元件分類: 基準電壓源/電流源
英文描述: THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
中文描述: 8 V FIXED POSITIVE REGULATOR, PSFM3
封裝: PLASTIC, SFM-3
文件頁數(shù): 6/12頁
文件大?。?/td> 224K
代理商: MCT7808CT
MCT7800
MCT7800
6
MOTOROLA
ELECTRICAL CHARACTERISTICS (continued)
(Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7812B
MCT7812C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Ripple Rejection
15 Vdc
Vin
25 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = +25
°
C)
Output Noise Voltage (TA = +25
°
C)
10 Hz
f
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (TA = +25
°
C)
Vin = 35 Vdc
Peak Output Current (TJ = +25
°
C)
Average Temperature Coefficient of Output Voltage
RR
62
62
dB
VI – VO
Vn
2.0
2.0
Vdc
μ
V/VO
10
10
rO
ISC
18
18
m
A
0.2
0.2
Imax
TCVO
2.2
–1.0
2.2
–1.0
A
mV/
°
C
ELECTRICAL CHARACTERISTICS
(Vin = 23 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7815B
MCT7815C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (TJ = +25
°
C)
Output Voltage (5.0 mA
IO
1.0 A, PO
15 W)
17.5 Vdc
Vin
30 Vdc
18.5 Vdc
Vin
30 Vdc
Line Regulation, TJ = +25
°
C (Note 2)
17.5 Vdc
Vin
30 Vdc
20 Vdc
Vin
26 Vdc
Load Regulation, TJ = +25
°
C (Note 2)
5.0 mA
Vin
1.5 A
250 mA
Vin
750 mA
Quiescent Current (TJ = +25
°
C)
Quiescent Current Change
17.5 Vdc
Vin
30 Vdc
18.5 Vdc
Vin
30 Vdc
5.0 mA
IO
1.0 A
Ripple Rejection
18.5 Vdc
Vin
28.5 Vdc, f = 120 Hz
VO
VO
14.4
15
15.6
14.4
15
15.6
Vdc
14.25
15
15.75
14.25
15
15.75
Vdc
Regline
11
5.0
300
150
11
5.0
300
150
mV
Regload
3.0
2.0
300
150
3.0
2.0
300
150
mV
IB
IB
5.5
8.0
5.5
8.0
mA
1.0
0.5
1.0
0.5
mA
RR
60
60
dB
Dropout Voltage (IO = 1.0 A, TJ = +25
°
C)
Output Noise Voltage (TA = +25
°
C)
10 Hz
f
100 kHz
VI – VO
Vn
2.0
2.0
Vdc
10
10
μ
V/VO
Output Resistance f = 1.0 kHz
rO
ISC
19
19
m
Short Circuit Current Limit (TA = +25
°
C)
Vin = 35 Vdc
0.2
0.2
A
Peak Output Current (TJ = +25
°
C)
Average Temperature Coefficient of Output Voltage
Imax
TCVO
2.2
2.2
A
–1.0
–1.0
mV/
°
C
NOTES:
1. Tlow= 0
°
C for MCT78XXC
= – 40
°
C for MCT78XXB
Thigh= +125
°
C for MCT78XXB, C. When the junction temperature exceeds +125
°
C, internal current limiting
will reduce the output current to less than 1.0 A at a VI–VO of 15 V or
greater. The MC7800 die will supply more current under the same conditions.
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
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